Something I have wondered about for some time now.
What is the rarest consonant SOUND in the world? I know some subsuharan African peoples have a clicking sound, which is unheard of, in European languages at least. But is that the rarest? There must be something even rarer than that. I suspect this question may have not been asked before. So feel free to speculate, when necessary.
And finally, what is the least rare consonant sound? For some reason I suspect it’s ‘B’, only because it’s the first consonant of many alphabets. But I could be wrong.